Heres some spear and arrowheads of fused shale and obsidian:
http://i26.photobucket.com/albums/c120/richardsaffold/IMG_1737.jpg
Heres a replica ISHI point out of glass
http://i26.photobucket.com/albums/c120/richardsaffold/IMG_1738.jpg
"Bow just stick, arrow kill deer"
http://i26.photobucket.com/albums/c120/richardsaffold/IMG_1737.jpg
Heres a replica ISHI point out of glass
http://i26.photobucket.com/albums/c120/richardsaffold/IMG_1738.jpg
"Bow just stick, arrow kill deer"